Supplying float for drawing sheets of glass



March l0. 1925.

J. J. QUERTINMONT SUPPLYING FLOAIl FOR DRAWING SHEETS OF GLASS Filed Aug. 2, 1924 Patented Mar. 10, 1925.

UNITED STATES PATENT .,oFFlcE;

j JULES J. QUERTINMONT, OF POINT MAR-ION, PENNSYLVANIA.

SUPPLYING rLoA'r nos DRAWING SHEETS vor GLASS.

Application filed August 2, 1924. Serial No. 729,783:

To all whom t may concern.'

Be it known that I, JULnsJ. QUERTIN- MONT, a citizen of the United States, residing at Point Marion, in the county of Fayette and State of Pennsylvania, have invented certain new and useful Improvements in Supplying Floats for Drawing Sheets of Glass, of which the following is a specification` This invention relates to the floats or ,de-

biteuse7 which are used in connection with brilliancy and avoid the formation of a cold line or distortion at any section and throughout the entire width and length of the sheet.

Second, to so construct and form the supplying-float in order that a wall or body of molten glass is disposed or arranged in the float at the section or point just prior to the formation of the sheet takes place and at the same time preserve the temperature of the edges of the slot of the iioat forming the sheet at a uniform and proper heat thereby insuring that the sheet of formed or drawn glass will be hotter than heretofore and effect a more uniform and proper temperature of the molten glass as it is being drawn and f formed into a sheet while passing up, out and away from the supplying-float and enable said sheet of drawn glass to cool properly and'uniformly throughout its exterior plane surfaces and in its interior and yproduce a sheet of glass of better lustre and unusual brilliancy and without. the formation of cold lines than heretofore accomplished in glass drawing apparatus.

Third, to construct a supplying-float for drawing sheet glass which will efficiently, quickly and cheaply carry outall the operations, functions and advantages hereinbefore pointed out without the use of skilled artisans, careful adjustments, or auxiliary mechanism which involves the use of sup,- plemental heating or cooling of the formed sheet of glass as it leaves the supplyingiioat or shortly thereafter.

Fourth, to construct, proportion and arrange an undercut groove within.4 and on each side wall of `a slot forming a sheetof.

glass drawing opening,so that the flow and temperature of the molten glass through said opening are uniform throughout its entire, width and the friction of said molten glass against the side walls of the opening is reduced to a minimum.

Fifth, to construct a supplying-float having such characteristics, functions, and-mode of operation herein recited which will have a long life and high efficiency, simple in construction, and easily and cheaply manu-A factured.

Sixth, other objects and advantages of the improved supplying-float for debiteuse r will appear from the detailed description ofthe constructionv and arrangement of the parts and mode of operation to be hereinafter` given.

The invention consists of structural char- 4 acteristics and relative arrangements ofelements which will be hereinafter moreA fully described and particularly pointed out in the appended claims.

In the drawings in which similar' reference characters indicatethe same parts in the several figures:v v

Figure 1 is a top plan view of the supplying-float or debiteuse. v

Figure 2 is a bottom plan view. i

Figure 3 is a longitudinal section taken on the line III-III of Figure l.

e Figure 4 is a transverse section on line IV-IV of Figure l, and

, Fiv'ure 5 is ak transverse section on line V if: f I" l o *igure Referring to the drawings, 10 representster, or splinters which may become detached from the drawn glass or otherwise drop 'intoopening 17 and prevent too sudden chilling said pocket or depression 11, without being required or necessitating @the elevation or Vraising of said broken glass or v.i'oreign inatter with care and special tools. The bottom of said rectangular depression 11 is elevated at Aits longitudinal center portion and'slo'pes towardsthe side walls1v2, 12., Ls-,shown 1in Figures 4 and 5,' for the purpose of causing any detached or free particles oit 'glass (or y other -inatte'r to quickly gravitate away from f the high or ycenter section and Vcollect in the lower -side `secftions of the depression 11 andv thereby prevent said particles of` glass 'becomingattached from bei-ng dragged.

towards and into the moving sheet of glass drawn through the vfloat, as' will be readily understood.

' 15 is a Vlongitudinal slot-arranged in a vertical plane passingth-rough the longi-` tudinal axis oit the -supplying-iioat 1-0, and is of such a length Aaste be substantially of the saine dimension as lthe width of the glass sheet to be drawn, and accordingly varies r`depending'on what width of lglass sheet iste be drawn aswi'll be readily un-` dersteod.

`The cross section oi said-slot 15 varies and as will be clearly seen by reference to Figures 4' andy 5, con-tracts itroin its enlarged lower opening 16 to its narrow upper-and sheet forming opening 17, and said lower openingl has af varying width and 'gincreases from its 'middleV section 18vto each of' its eXtreini-tiesor ends A19, 19 and curved,

. as clearly shown inV Figure 2,` while the upper and sheet forming opening T17 of said'slot k15 is-"narrowand preferably decreases or tapers #trol-1 1V its iniddle section 20 to fea'chv off itsends 21, 2l, as clearly illustratedfinl Figure '1, and the proportions of the widthof the uppe'r'ior sheet forming opening 17 varies, depending upon the thickness of the vsheet formed.

22, 22 are undercut elongated and narrow grooves, depression or incision formed, cut

or molded in the upper section .of each of the walls 23 of the slot and said grooves are arranged oppositely to and` vparallelv to eachother andparalleland near the upper or sheet forming opening 17, as clearly shown in Figures 8 andv hand for the purposes to be inore fully and presently leX- plained.,y f L Said grooves22, 22 are so proportioned and arranged to extend entirely around and parallel a short distance of the upper open ing 17, as clearly shown in Figures 2 and' 3, andthe functions of'said grooves or undercuts 22, are for the purpose of inter- -cepting and retaining vfor aA short linterval of' time a body of highlyheated molten glass which will entirely and uniformly heatv the sheet foriningfedges 'of .the upper glass lto'beV drawn or of the glass sheet as it is formed and about to `pass through or leave the supplying-float or debiteuse, and insure the production of a finished sheet oi glass having high lustre and lbrilliancy, and no cold lines or other defects coinnion in drawing sheet glass.'

Furthermore, the friction of the glass-in passing through the vupper section ot the slot 15 as it approaches the slot 17 is Inateriallyy reduced'and the outer extremities of said slot 17 being slightly tapered or reduced'in cross-section, the sheet of glass is suliiciently cooled or chilled atfits edges to insure the proper Adrawing oil-fthe sheet and prevent any distortion or internal stra-in' inthe iinished sheet.

V*From the foregoing description of construction and arrangement or.' the `elements of the supplying-float or debiteuse and nianner ofi-ts oper-ation, it will bev seen that all ythe objects` and advantages recited in the lstatement of invention have been fully and efficiently carried out, and while l have shown one and the preferred forni of the saine, it will Iloe understood that inany changes, or variations will readily suggestthcrnselves without in any way.V departing fron'rthe present invention or'elvading the..

scope of the claiins.

YVliat I claim is: V1. A supplyinglioat :for drawing a continuous sheet ot glass having' a sloty with upper and lower openings and a pocket within'and in each side wz'rll` of said slot` elongated upper and lower openings and an the undercut elongated groove within and in y each side wall of said slot and adjacent to and Vbelow the upper opening oit' the slot.`

4. A supplyingv-float for drawing a continuous sheet of glass having a slot with elongated upper and lower openings and an undercut elongated groove within and in each vside wall of said slot and adjacent to and below the upper opening ofthe slot, said grooves being arranged parallel and opposite to each other throughout their length and width. f

5. A supplying-oat for drawinga' vcontinuous sheet of. glass having a slot with 'elongated upper land lower openings and a continuous narrow groove within and in each side wall of vsaid slot and adjacent to and below the upper opening and extending V within a short distance of the edge vof said upper opening.

6. A supplying-float for drawing a continuous sheet of glass having a slot with elongated upper and lower openings and a continuous narrow groove within and in each side wall of said slot and adjacent to and below the upper opening and extending to within a short distance of the edge of said upper opening, said grooves being arranged opposite to each other and parallel to each other and said upper opening.

7. A supplying-float for drawing a continuous sheet of glass having a slot with elongated upper and lower openings and an undercut narrow elongated groove within and in each side wall of said slot and adjacent to and parallel with and below the upper opening and extending to within a short distance of the edge of said upper opening.

8. A supplying-float for drawing a continuous sheet of glass having a slot with a lower opening, and an upper opening which is tapered from its medial section towards each of its ends and a narrow elongated pocket within and in each side wall of said slot and adjacent to and below the upper opening of the slot.

9. A supplying-float for drawing a continuous sheet of glass having a slot with a lower opening, and an upper elongated opening which is tapered from'its medial section towards each of its ends and a groove within and in each side wall of said slot and adjacent and parallel to and below the upper opening of the slot.

10. A supplying-float for drawing a continuous sheet of glass having a slot with a lower opening, and an elongated upper opening which is tapered from its medial section towards each of its ends and an undercut narrow groove within and in each side wall of said slot and adjacent to and below the upper opening of the slot, said grooves being arranged opposite to and parallel to each other and said upper opening.

11. A supplying-float for drawing a continuous sheet of glass having a slot with an elongated lower opening which expands from its center towards each of its ends, and an elongated upper opening with the ends of less width than the intermediate section thereof and an undercut groove within and in each side wall of said slot adjacent to and below the upper opening and extending to within a short distance of the edge of the upper vopening of the slot, said grooves being arranged parallel and opposite to each other throughout their length and width and parallel to the upper opening.

12. A supplying-float for drawing a continuous sheet of glass having a slot with a lower opening and an upper opening with the ends of less width than the intermediate section thereof and an undercut groove within and in each` side wall of said slot andadjacent to and below the upper opening and extending to within a short dis-l tance of the edge of the upper opening of the slot.

13. A'supplying-ioat for drawing a con? tinuous sheet of glass having a slot `with a lower opening and an elongated narrow upper opening with the ends of less width than the intermediate section thereof and an undercut groove within and in each side wall ofv said slot and adjacent to and below the upper opening and extending to within a short distance of the edgeof the upper opening of the slot.

14. A supplying-float for drawing a continuous sheet of glass having a slot with an elongated lower opening and an elongated narrow upper opening with the ends in and in each side wall of said slot adja-y cent to and below the upper opening and extending to within a short distance of the edge of the upper opening of the slot, said grooves being arranged parallel and oppo` site to each other throughout their length and width and parallel to the upper opening.

16. An elongated supplying-lioat for drawing a continuous sheet of glass having a raised or elevated outer edge on its upper face,'said face sloping downwardly from its longitudinal center section towards' each of its longitudinal sides and a slot with an upper opening atV the highest portion of said upper face and a lower opening, and an undercut groove within and in each side wall of said slot and below the upper opening of the slot.

17. An elongated supplying-float for drawing a continuous sheet of glass having a raised or elevated outer edge on its upper face, said face sloping downwardly from its longitudinal center section towards each of its longitudinal sides and a slot with an elongated upper opening at the highest portion of said upper face and a lower opening, and a continuous narrow groove within and in each side wall of said slot and adjacent to and below the upper opening and extend-` ing to within a short distance of the edge of said upper opening. l

18. An elongated supplying-float for dra-winga continuous sheet of glass having CII a raised or elevated ridge on its upper face at each of its lvlonfbliftndinal edges and a e broken elevated i'd'ge on its upper face at eac-h of its ends, l:sa-id face sloping down- Wardly from its longitudinal center section towards leach .of its longitudinal sides and a slot with an upper opening at Jche lhighest poi-'bien ef 'said upper face and a' `lower` opening, and an undercut grOOVe-'Wilii-nfmd upper opening yof the slot.'

ln testimony whereof, I thereunto signature.

JULES 3.,.QUERTINM0NT- 

